OpenCV2:幼儿园篇 第六章 图像转换

一.简介

 

二.例子

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#include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <iostream>   int main() {       // 图像源读取及判断     cv::Mat srcImage = cv::imread("a.jpg");     if (!srcImage.data)         return -1;     cv::imshow("srcImage", srcImage);     cv::Mat image_hsv, image_H, image_S, image_V, image_col;            // HSV颜色空间转换     cv::cvtColor(srcImage, image_hsv, CV_BGR2HSV);     cv::imshow("image_hsv", image_hsv);       // YCrCb颜色空间转换     cv::cvtColor(srcImage, image_col, CV_BGR2YCrCb);     cv::imshow("image_YCrCb", image_col);       // HLS颜色空间转换     cv::cvtColor(srcImage, image_col, CV_BGR2HLS);     cv::imshow("image_HLS", image_hsv);       // Lab颜色空间转换     cv::cvtColor(srcImage, image_col, CV_BGR2Lab);     cv::imshow("image_Lab", image_col);       // 分离HSV各个通道     std::vector<cv::Mat> hsvChannels;     cv::split(image_hsv, hsvChannels);       // 0通道为H分量,1通道为S分量,2通道为V分量     image_H = hsvChannels[0];     image_S = hsvChannels[1];     image_V = hsvChannels[2];       // 分别显示各通道图像     cv::imshow("image_H", image_H);     cv::imshow("image_S", image_S);     cv::imshow("image_V", image_V);       cv::waitKey(0);     return 0;   }